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Alfa Laval
X20 For heavy crude oil dehydration

X20 For heavy crude oil dehydration

Product catalog summary

Overview
The Alfa Laval X20, model OFSX 520T-11CEGPX, is a high-capacity purifier designed for the dehydration of heavy crude oil, with an API as low as 11.5. It features a robust nozzle-type centrifuge suitable for demanding oil industry conditions and complies with the EC ATEX directive for Zones 1 and 2. It can operate under a positive pressure of 400 kPa with an ASME-approved pressure casing.

Applications
The X20 purifier reduces water and particle content to 0.5% BS&W or lower in crude oil with a water cut of up to 30%. It is particularly effective for heavy crude oil and is compact for offshore processing, including floating platforms.

Design and Features
The separation occurs in a bowl driven by a vertical spindle and electric motor. The centrifuge motor supports variable frequency drive. All metallic parts in contact with the process liquid are made of high-grade stainless steel, and gaskets are made of fluorocarbon rubber. The nozzles, made of tungsten carbide, are easily accessible for maintenance. The solids collecting ring includes a polyurethane wear liner. The machine features a cover interlocking kit for safety.

Special Features
The X20 can be equipped with an OPTIPHASER™ system for stable oil/water interface management, ensuring consistent separation performance. It can also import water into the bowl if necessary.

Basic Equipment and Options
The centrifuge comes with a motor, tools, sensors, and a standard set of spares. Optional features include a nozzle monitor and a pressurized bowl casing. A conversion kit is available for de-oiling water applications.

Operating Principles
The feed enters the centrifuge bowl from the top, is accelerated, and separation occurs between the discs. The oil phase is pumped out, while solids and water are discharged through nozzles. The OPTIPHASER™ system ensures no oil loss through the nozzles.

Technical Specifications
Maximum throughput capacity is 190 m3/h, with a bowl speed of 3,750 rpm and motor power of 152 kW. The feed temperature range is up to 110 °C, and sound pressure is 82 dB(A).

Utilities Consumption
Electric power consumption is up to 96 kW, with safety water usage between 43–55 m3/h. Inert gas blanketing is approximately 0.4 Nm3/h.

Material Data
The bowl body and other key components are made from high-grade stainless steel, with fluorocarbon rubber gaskets and O-rings.

Dimensions and Shipping Data
The centrifuge, including the bowl and motor, weighs approximately 4,580 kg, with a gross weight of 4,900 kg and a volume of 8.0 m3.

Contact Information
For up-to-date contact details, visit Alfa Laval's website at www.alfalaval.com. Specifications are subject to change without prior notification.

Catalog excerpts

For heavy crude oil dehydration X20 The Alfa Laval X20, model OFSX 520T-11CEGPX, is a high capacity purifier designed for dehydration of crude oil, especially heavy crude oil with an API down to 11.5. The design is based on the robust nozzle-type centrifuge in order to withstand the demanding situations encountered in the oil producing industry. The machine is in compliance with the EC ATEX directive category 2, and therefore Zones 1 and 2. As an option, the machine can be operated under a positive pressure of 400 kPa, as it has an ASME-approved pressure casing. The X20 purifier is one machine in the X20 family, which also consists of machines for applications such as produced water de-oiling and tar sand dehydration. Applications The X20 purifier is designed to reduce the water and particle content down to 0.5% BS&W or lower in crude oil at a water cut of up to 30%. Using a centrifuge for this application is especially suitable for heavy crude oil (down to API 11.5). The compact design makes it especially useful for offshore processing, including at floating platforms where the sea heave may cause problems for conventional technology. X20 purifier complete with skid.

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Standard design Separation takes place in the bowl, which is placed on a vertical spindle. An electric motor mounted vertically drives the spindle near the bottom via a flat belt. Circulating of lube oil ensures that the bearings are lubricated. An external pump maintains the necessary pressure. The centrifuge motor is designed for variable frequency drive. All metallic parts that come into contact with the process liquid are made of high-grade stainless steel. Liquid-wetted gaskets are made of fluorocarbon rubber. To recover energy from the discharged nozzle flow, the nozzles are placed in the...

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Technical specifications Throughput capacity max. 190 m3/h (840 US gpm) 1) Water flow max. 60 m3/h (260 US gpm) Oil flow max. 190 m3/h (840 US gpm) Nozzle flow max. 30 m3/h (130 US gpm) Bowl volume 70 l Bowl speed 3,750 rpm Motor speed, synchronous. 50/60Hz 1,500/1,800 rpm Motor power installed 152 kW Centrifugal force inside bowl max. 6,480 g Starting time 5–8 mins Stopping time without brake 80 mins Stopping time with brake 6–7 mins Feed temperature range max. 110 °C (230 °F) 2) Feed inlet pressure required at inlet flange min. 100 kPa 3) Outlet pressure of oil at outlet flange 500 kPa 4) Outlet...

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PCHS00014EN 0608 How to contact Alfa Laval Up-to-date Alfa Laval contact details for all countries are always available on our website at www.alfalaval.com Alfa Laval reserves the right to change specifications without prior notification.

Open the catalog to page 4

X20 For heavy crude oil dehydration

X20 For heavy crude oil dehydration

Catalog excerpts

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